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Finding the Fourth Proportional to 77.61, 116.49 and 37.06

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Solution

The fourth proportional to 77.61, 116.49 and 37.06 is: 55.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.61 : 116.49 = 37.06 : x
  2. Step 2: Convert to fraction form
    77.61/116.49 = 37.06/x
  3. Step 3: Cross multiply
    77.61x = 116.49 × 37.06
  4. Step 4: Simplify right side
    77.61x = 4,316.76
  5. Step 5: Solve for x
    x = 4,316.76/77.61
  6. Step 6: Final answer
    x = 55.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.